Classification
363 - Other social problems & services
330 - Economics
9
333 - Economics of land & energy
9
551 - Geology, hydrology & meteorology
8
600 - Technology
8
620 - Engineering & allied operations
5
320 - Political science
4
380 - Commerce, communications & transportation
4
700 - The arts; fine & decorative arts
4
000 - Computer science, information & general works
3
140 - Specific philosophical schools
3
900 - History & geography
3
530 - Physics
2
540 - Chemistry & allied sciences
2
658 - General management
2
100 - Philosophy & psychology
1
170 - Ethics
1
300 - Social sciences
1
344 - Labor, social, education & cultural law
1
500 - Natural sciences & mathematics
1
576 - Genetics & evolution
1
580 - Plants (Botany)
1
581 - Specific topics in natural history
1
610 - Medicine & health
1
630 - Agriculture & related technologies
1